Measurement of Deep Sclae on Weld Defects based on Point X-Pay Source

This paper presents a real-time automatic method of deep information detection. A real-time image system with X-ray image-intensifier is used for requirement of real-time and automation instead of X-ray film. Number of image is limited due to lass image space. Only three projection images are used for 3-D information detection in this method. The light resource can not be booked upon a parallel light resource that is different form X-ray filme image approach. An image principle and approach based on point light resource is introduced. The detection of 2-D defects is based on computation deep information and precise edge detction is based on 2-D defects detection. A multi scales edge detection method, which was created by Marr and developed by Canny, Wiken and Mallat, is a perfect method. However, they could not solve the scale adaptive problems.A multi-scale adaptive method based on image information measurement is introduce in this paper.